#include <stdio.h>
#include <unistd.h>
#include <string.h>

int main()
{
    // C接口
    printf("hello printf\n");
    fprintf(stdout, "hellp fprintf\n");
    const char *fputsString = "hello fputs\n";
    fputs(fputsString, stdout);


    // 系统接口
    const char *wstring = "hello write\n";
    write(1, wstring, strlen(wstring));

}
